Title :
A reduced high dimensional FDTS for magneto-optical recording
Author :
Higashino, Satoru ; Kakagawa, T. ; Ino, Hiroyuki ; Shimpuku, Yoshihide
Author_Institution :
Media Process. Lab., Sony Corp., Shinagawa, Japan
fDate :
9/1/1997 12:00:00 AM
Abstract :
FDTS (Fixed Delay Tree Search) sequence detection using metric calculation is demonstrated. FDTS with a long tree depth is performed using a High Dimensional Signal Space Detector. We propose a new HD (High Dimensional)-FDTS employing a reduction algorithm under conditions of a certain minimum RLL (Run Length Limitation) of code and with ISI (intersymbol interference). We made sure that the HD-FDTS minimum distance taking account of the RLL code was close to that of a Viterbi decoder. The decoder circuit is small and high speed and has a reasonable noise margin for an ideal equalized wave with AWGN (Additive White Gaussian Noise). The HD-FDTS may be applied to PLL (Phase Locked Loop) and AGC (Automatic Gain Control) because of the short decoding delay
Keywords :
Gaussian noise; automatic gain control; delays; intersymbol interference; magnetic recording noise; magneto-optical recording; partial response channels; phase locked loops; runlength codes; sequential decoding; signal detection; tree searching; white noise; Viterbi decoder; additive white Gaussian noise; automatic gain control; decoder circuit; decoding delay; fixed delay tree search sequence detection; high dimensional signal space detector; high speed; ideal equalized wave; intersymbol interference; long tree depth; magneto-optical recording; metric calculation; minimum RLL code; noise margin; partial response equalization; phase locked loop; reduced high dimensional FDTS; reduction algorithm; AWGN; Additive white noise; Decoding; Delay; Detectors; High definition video; Intersymbol interference; Magnetooptic recording; Phase locked loops; Signal detection;
Journal_Title :
Magnetics, IEEE Transactions on
